Consider the following statement about the a equilibrium,2SO2( g)+O2(g)⇌2SO3(g);ΔH°=-198 kJI. On decreasing the temperature as well as pressure equilibrium shifts in forward direction.II. On increasing temperature and pressure equilibrium shifts in forward direction.III. On decreasing the temperature and increasing the pressure, equilibrium will shift in forward direction.Choose the correct option.

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I and II

Only II

Only III

I, II and III

answer is C.

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